Gas burner for heating appliances



Feb. 3, W31. H. E. KERR GAS BURNER FOR HEATING APPLIANCES Filed 001. 21,1.926 2 Sheets-Sheet l m n In E w H Feb. 3, 1931.

H E. KERR GAS BURNER FOR HEATING APPLIANCES Filed Ogt. 21, 1926 2Sheets-Sheet 2 Patented Feb. 3, 1931 PATENT OFFICE HAIR-RY E. KERR, 0FCLEVELAND, OHIO, ASSIGNOR TO THE BARBER GAS BURNER COM- PANY, 0FCLEVELAND, OHIO, A CORPORATION OF OHIO GAS BURNER FOR HEATING APPLIANCESApplication filed October 21, 1926. Serial No. 143,106.

My invention relates to gas burners for heating appliances, and thepresent burner is an improvement in the burner shown and described inLetters Patent of the United States, granted to me, November 3, 1925,No. 1,560,248. Reference may also be had to my pending applications forimprovements in gas burners, Serial Nos. 99,213 filed April 2, 1926, nowPatent No. 1,691,607, issued November 13, 1928, and 105,436, filed April29, 1926, now Patent No. 1,723,180, issued August 6, 1929, respectively.In general my object is to combine an air and gas commingling tube ofsmall dimensions, such as shown and described in my Letters Patentaforesaid, with a second mixing and delivering tube of largerdimensions. The larger tube is constructed to baflie the discharge fromthe small commingling tube and to divide and deliver the mixture to aplural number of discharge jets or nipples, all as hereinafter shown anddescribed and more particularly pointed out in the claims.

In the drawings accompanying this application, Fig. 1 is a sectionalview vertically of a gas burner unit embodying my improvement, and Fig.2 is a section on line 22 thereof. Fig. 3 is a side elevation of theforked delivery head, and Fig. 4 a side elevation of the comminglingtube for said head. Fig. 5 is a top view of a circular gas burner havinga series of my improved gas burner units mounted rotata'bly thereon.Figs. 6 and 7 are sectional views of modified forms of the invention.

The invention comprises a small air and gas commingling tube -A- havinga screwthreaded extension 2 adapted to connect with a gas distributingmanifold 3 of any desired form or shape. The main body of tube --A- iscylindrical and adapted to support a hollow forked member B. Tube A.contains a small gas orifice 4 in its base adapted to jet a fine streamof gas at high ve- 7 locity through the main bore 5 of the tube intohollow member B, and the sides of the tube contain lateral air intakeopening 6 adjacent the outlet end of orifice 4 through which streams ofair of definite size may be entrained by the rapidly moving gas stream.a hollow head or delivery member 100 Bore 5 of tube -A is only aboutseventhirty seconds of an inch in diameter, and its length is about oneinch. The flow of air through this small tube is definitely restrictedby making the air intake openings 6 smaller in diameter than bore 5 ofthe tube. In that way the air and gas may be discharged constantly indefinitely fixed proportions into hollow member B-. The gas stream isdischarged from the mouth of tube -A with considerable force, whichdischarge is so great under maximum pressure conditions of supply thatno fiame can be maintained beyond the mouth of the tubein the absence ofhollow member .B-. therefore formed with a curved baflie wall 7 oppositethe mouth of tube A to intercept the stream of gas and cause it tospread within the hollow member. Bafiiing also produces a thoroughintermix of the gas and air within the hollow member, and thecombustible mixture is divided and caused to flow with reduced speedthrough the branching passages 8-8 before escaping at their outlets ortips 9-9 where combustion occurs. Member B is adjustable vertically upontube -A.- to regulate the force of impact and spreading movement of thegas stream Within hollow member B- and to promote proper admixture ofair and gas before dividing and discharging the same. Thus member -B issleeved upon tube -A and may be fixed at different elevations thereon bymeans of a set screw 10, thereby varying the distance between bafflewall 7 and the mouth of the tube. Such adjustment also regulates theforce of discharge of the combustible mix ture at the outlets or tips 9,and the height of the flame is also controlled thereby. The separatestreams of combustible mixture issuing from the separate outlets or tips9 may be caused to intermingle by inclining the tips 9 toward each otherand thereby produce a single large body of flame, as shown in Fig. 1.However, separate columns of flame of less height may be produced byusing a hollow member B-- having straight vertical outlets or tips 9 asshown in the modified form of burner in Fig. 7. In Fig. 6 I show Thismember is mounted in screw-threaded connection with a screw-threaded airand gas commingling tube --A- to permit vertical adjustment of saidmember upon the tube, substantially as indicated in dotted lines.Members -B- and B may also be rotated upon their supporting tubes, whichpermits different settings of such members to be obtained above and inrespect to the manifold 3 as shown in full and dotted lines in Fig. 5.

In Fig. 7 the lower part 11 of the sleeve portion 12 of hollow member Bis enlarged to permit it to be sleeved over the enlargement 14containing the air intake opening 6. The entrance to these openings maybe opened more or less by part 11 in adjusting member B-- verticallyupon tube --A', thereby regulating the amount of air to be taken intothe tube for intermix with the gas stream.

What I claim, is:

1. In a gas burner for heating appliances, the combination of a smallcommingling tube having an axial gas orifice and lateral air intakeopening of small cross section for producing undernormal gas pressure anon-burning mixture at the outlet of the tube, with a supplementalmixing and delivery tube having a baifie wall axlally of said tube and aplurality of outlets for the combustible mixture.

2. A gas burner for heating appliances, comprising a commingling tubehaving a gas orifice and restricted air intake, and a separate forkeddelivery tube axially aligned with and sleeved. upon said comminglingtube to intercept the gas stream, said first tube being inoperativeunder normal gas pressures in the absence of said second tube.

3. A gas burner for heating appliances, comprising a commingling tubehaving a straight bore provided with an axial gas orifice at one end,and formed with air intake openings adjacent the outlet end of said gasorifice, said air intake openings being smaller than said bore to limitthe flow of air, in com-.

bination with a supplemental mixing tube axially aligned with andsleeved upon said commingling tube to intercept the gas str'eam andhaving diverging delivery branches terminating in outlet nipples.

4. A gas burner for heating appliances, comprising an air and gascommingling tube, and a forked tube adjustably mounted upon said firsttube having separate outlets inclined toward each other to produce a confluent discharge of the combustible mixture.

5. A gas burner for heating appliances, comprising an air and gascommingling tube of small dimensions, in combination with a supplementalmixing tube having diverging discharge passages and converging outlets.

6. A gas burner for heating appliances, comprising an air and gascommingling tube adapted to discharge air and gas at high velocity fromits mouth, a supplemental mixing member connected to said tube having acurved bafile wall oppositesaid mouth and branching passages terminatingin inclined outlets extending toward each other, and means adapted tofix said mixing member at digerent elevations upon said commingling tue.

7 gas burner for heating appliances, comprising a commingling tubehaving a gas orifice axially therein and air intake openings in itsside,in combination with a supplemental mixing and delivery tube axiallyaligned with, sleeved over and adjustably mounted upon said tube tocontrol said air intake openings.

8. A gas burner for heating appliances, comprising a commingling tubehaving gas and air intake openings, and a supplemental mixing tubesleeved adjustably upon said commingling tube in covering relation tosaid air intake openings, said mixing tube having branching outlets forthe combustible mixture.

9. A gas burner for heating appliances, comprising a commingling tubehaving gas and air intake openings proportioned to prevent maintenanceof a flame at the mouth of the tube under maximum pressure conditions ofsupply, and a supplemental mixing tube axially aligned with and sleevedupon said commingling tube to retard the gas stream, said supplementaltube having separate spaced outlets for the combustible mixture.

In testimony whereof I afiix my signature.

HARRY E. KERR.

